EP1014510A1 - Combined charge and fluid/gas connection device - Google Patents

Abstract

The plug device includes plug connectors which respectively have a sideways extending case to provide additional receptacles in a case section. The receptacles accommodate a socket contact or a plug pin contact for a third main contact, or alternately an additional fluid or gas coupling. An Independent claim is included for a plug connector in the form of a socket or plug.

Description

The invention relates to a combined charging and fluid / gas plug device, in particular min connecting an accumulator with electrolyte circulation to a current and a fluid supply unit according to the preamble of claim 1.

Such a plug-in device is in accordance with European laid-open specification EP 0 821 444 A2 known.

This relates to a light, compact, multi-pole plug-in device and two plug-in connectors therefor, for connecting accumulators to electric industrial trucks or chargers,
in particular those which have an electrical connection and a fluid / air connection for a fluid or compressed air transport system, it being possible to connect the plug connectors with conventional device plug-in devices in accordance with the DIN standard, in particular in accordance with the DIN standard, in spite of the fluid / air coupling parts being in contact Standard 43589-1, which have no fluid / air coupling parts.

The fluid / gas coupling parts and lines are largely created within the housing of the plug-in device, the socket-shaped and pin-shaped connections of which are located entirely within the plug-in attachment or only protrude into the protective collar of the plug connector and are there laterally next to the main and Pilot contacts extend additionally.
The fluid / gas coupling parts are easily removable, so that it is possible to retrofit a plug-in device with them and also to easily repair or replace the fluid / gas coupling parts with additional pilot contacts.

The disadvantage here is that the possible size of the line diameter of the fluid / gas coupling parts due to the electrical contact elements required according to DIN and dimensions of the connectors, in particular the protective collar and of the plug-in approach is limited. In this respect, EP 0 821 444 A2 contains only one Fluid line is provided, which is even in two to the mating face of the connector Lines with smaller diameter branches. Furthermore, the connectors have only main contacts for 2 phases.

Starting from a combined charging and fluid / gas plug-in device at the beginning mentioned type there is therefore the task of the present innovation, a light, compact, To create multi-pole charging and fluid / gas connector, especially one Battery socket and a charging or vehicle plug for it, with an electrical connection and with a fluid / gas connection, in particular for connecting batteries a charging station with a fluid or compressed air transport system and a fluid or Compressed air supply for battery maintenance, with corresponding connectors with Connectors according to DIN 43589-1 can be plugged and integrated fluid / gas coupling parts exhibit. But it should be compared to connectors according to the EP 08 21 444 A2 due to the possible installation of additional fluid or. Gas air lines or additional main contacts result in an increased range of use.

To solve this problem is a combined charging and fluid / gas plug device provided according to claim 1.

In contrast to a two-pin device connector with socket and pin contacts According to DIN 43589-1, the charging and fluid / gas plug device according to the invention Connectors, each of which is so widespread on one side Housing have that given a housing section with additional receptacle is, in each of which a socket contact or a pin contact of a third main contact added or alternatively an additional fluid / gas coupling part can be added is.

To this extent, the housing of the socket has a plug-in attachment, softer a first one Has a plug-in section according to DIN 43589-1, which surrounds two socket contacts, and an additional second plug-in section separate from this section for taking up a third socket contact.

The housing of the plug is correspondingly widened laterally, which in particular applies to the area of the protective collar. This has two sections, of which a first protective collar section with its plug-in receptacle in accordance with the standard for electric industrial trucks is formed and for receiving two parallel pin contacts serves.

This section goes laterally with its outer wall directly into the outer wall the otherwise separate outer second section of the protective collar for storing an additional pin contact. These protective collar sections are so equipped with contacts and dimensioned that the outer contours of the two Plug-in sections in the plugged-in state of the socket and plug in the two protective collar sections formed and engage there be contacted.

The plug-in extension of the socket has two receiving spaces in its first plug-in extension section in which two socket contacts are electrically isolated from each other introduced for different electrical phases and with their end section in the contact part that follows from the plug-in attachment to the rear are set.

In addition to these two receiving spaces, there is one in the additional second connector section created third receiving space guided in parallel, in which a preferably third socket contact of the same size parallel to the other socket contacts is interchangeably arranged and like the first two socket contacts in the contact part adjoining the plug-in attachment can be fixed.

In this respect, it is possible to use a plug device made of such connectors Connect lines of 3 phases, for example two positive phases and one negative phase.

As a result, the second plug-in attachment section laterally to the first plug-in attachment section is arranged separately and parallel to this, it is possible to the first plug-in section also largely according to the plug-in approaches of battery sockets Training DIN for electric trucks, this for the training of Plug-in section applies over its entire circumference and length.

In this respect, the first plug-in extension section can, like the first protective collar section the protective collar of the plug with two main and two pilot contacts and receptacles be provided in accordance with the standard for electric trucks as well as additional ones Fluid / air coupling parts according to the two-pole connector of the battery socket EP 0 821 444 A2. Furthermore, instead of the additional fluid / air coupling parts additional pilot contacts are inserted in the plug-in attachment.

It is a different equipment of the present connector as Combined charging and fluid / gas connector with electrical contact elements and additional fluid / gas coupling parts possible, so that in addition to different electrical connections also different air or gas and fluid couplings are producible.

According to claim 4, both the socket preferably has its first Plug-in section as well as the plug over the first area of its protective collar Dimensions according to DIN 43589-1 for electric trucks and a corresponding one Mating face, at the same time training the mating face and the housing with additional holders for pilot contacts and / or air or gas and fluid coupling parts according to the connectors of EP 0 821 444 A2.

To now have a compatibility between the plug devices according to the invention laterally wider housing for receiving a third main contact and the plug devices with a smaller housing to accommodate two main contacts To achieve according to DIN 43589-1 or EP 0 821 444 A2 is according to claim 2 provided that the first plug-in portion of the socket laterally to the outer from this separate plug-in shoulder section so far according to the outer dimension the protective collar of a plug for electric trucks with only two parallel pin contacts is spaced that an additional plug with a such plug device or its narrower protective collar is possible.

In contrast to the separate, spaced apart, two plug-in attachment sections The socket turns the protective collar of a plug into an external one closed single section formed.

But there are two different areas inside the protective collar itself, which for plugging with the two separate connector sections form two separate plug-in receptacles.

However, these two areas of the protective collar are laterally with respect to their outer wall directly connected to each other by a common wall area, but this is used as a partition for two adjacent ones, not one inside the other transition plug-in receptacles is formed. The thickness of the partition is at least somewhat smaller than the distance between the two plug-in attachment sections according to claim 2 executed.

In these plug-in receptacles, a maximum of three pin contacts that can be attached protrude, which in the contact part of the Plug are stored in three different recording rooms and deal with their exterior Extend plug-in section into the protective collar.

The third main contact is in the protective collar of the Plug by the installation of two separate plug-in receptacles and in the Contact part through an additional third receiving space, as well as to the other in the connector and in the contact part of the socket by another additional storage space from the two lateral provided according to the standard Main contacts largely separated.

This is a special advantage, if instead of or in addition to the according Claims 6 to 13 according to EP 0 821 444 A2 to be applied air or fluid coupling part an additional gas or fluid coupling part, especially for water, is to be provided according to claim 14. This additional fluid coupling part in the socket and the plug is instead of the additional third main contact that can be introduced there applicable.

It has such a length and a wall that is so designed and constructed in its wall outside opening undercut on that there with a closure part and a locking plate can be fixed, which also for fixing the other three Main contacts as well as the remaining pilot contacts and fluid coupling parts are used.

Advantageous designs of this fluid / gas coupling part result from the Claims 15-19, in particular advantageous mounts, seals and the Installation of check valves provided to close the outlet of these coupling parts if liquids are present in them or have to be conducted over them.

The combined charging and fluid / gas plug device according to the invention is described below explained using a preferred embodiment.

Figur 1

Eine Draufsicht auf die Oberseite einer sowohl zur elektrischen Verbindung als auch für eine Fluid-/Gas-Kupplung dienenden 3-poligen Steckdose mit drei in dessen Steckansatz ragenden Buchsenkontakten, wobei in die Oberseite des Steckdosengehäuses ein Verschlußteil mit äußerer Trägerplatte zur Arretierung der Kontaktelemente und Fluid-/Gas-Kupplungsteile eingelassen ist.

Figur 2

Eine Querschnittsansicht entsprechend einer Schnittlinie A-A' durch den Steckansatz der Steckdose gemäß Figur 1 unter Darstellung der Buchsen- und Pilotkontakte und Durchgangsbohrungen zur Lagerung zweier Fluid-/Gas-Kupplungsteile und eines Codierstiftes;

Figur 3

Eine Querschnittsansicht durch den seitlichen zusätzlichen Steckansatzabschnitt zur Aufnahme eines einzigen Buchsenkontaktes oder eines dritten Fluid-/Gas-Kupplungsteils, wobei dieser parallel seitlich zu dem gemeinsamen Steckansatzabschnitt der beiden parallel geführten, gemäß Norm angelegten Buchsenkontakte geführt ist;

Figur 4

Eine Querschnittsansicht entlang der Längsseite des Verschlußteils einer Steckdose gemäß Figur 1, 2, welche aber entlang der auf der halben Breite des Verschlußteils geführten Schnittlinie BB' nach Figur 5 verläuft;

Figur 5

Eine Draufsicht auf die äußere Trägerplatte des in Figur 4 dargestellten Verschlußteils mit verdeckter, an dessen Unterseite senkrecht abstehender Arretierplatte;

Figur 6

Eine Querschnittsansicht entlang der Schnittlinie EE' über die Schmalseite des Verschlußteils der Figur 4 und 5, gesehen auf deren äußere Arretierplatte, die Trägerplatte und einen am Ende davon abstehenden Arretiersteg;

Figur 7

Eine Draufsicht auf die Oberseite eines 3-poligen Steckers, welcher mit der Steckdose gemäß Figur 1 übersteckbar ist, wobei in dessen Gehäuse das Verschlußteil mit der äußeren Trägerplatte zur Arretierung der aus zwei oder wie hier drei Stiftkontakten bestehenden Hauptkontakte, zweier Pilotkontaktstifte, eines Codierstiftes und zweier Fluid-/Gas-Kupplungsteile eingesetzt und festgeklipst ist;

Figur 8

Eine Querschnittsansicht durch den Schutzkragen in Richtung Führung der Zugentlastungsschelle entlang der Schnittlinie CC' der Figur 7;

Figur 9

Eine Querschnittsansicht durch den bloßen Schutzkragen unter Draufsicht auf den Übergangs zum restlichen Steckergehäuse entlang der Schnittlinie CC' der Figur 7;

Figur 10

Eine Querschnittsansicht entlang der Längsseite des Verschlußteils eines Steckers gemäß Figur 7, 8 gemäß einer seitlich entlang der Längsseite des Verschlußteils geführten Schnittlinie DD' nach Figur 11;

Figur 11

Eine Draufsicht auf die äußere Trägerplatte des Verschlußteils der Figur 10 mit der von dessen Unterseite seitlich senkrecht abstehenden Arretierplatte;

Figur 12

Eine Querschnittsansicht entlang der Schnittlinie FF' über die Schmalseite des Verschlußteils der Figur 10 und 11, gesehen auf deren äußere Arretierplatte, die Trägerplatte und einen am Ende davon abstehenden Arretiersteg;

Figur 13

Eine Darstellung zweier unterschiedlicher zu verwendender Fluid-/Gas-Kupplungsteile der Steckdose.

Figur 14

Eine Darstellung der zu verwendenden entsprechenden Fluid-/Gas-Kupplungsteile des Steckers.

Figur 15

Die Darstellung der Anordnung jeweils eines Sperrventils in den gegenüberliegenden zu übersteckenden Fluid-/Gas-Kupplungsteilen von Stecker und Steckdose, durch welche das Austreten von Wasser aus einem an einer Batterie anzuschließenden Ladegerät und vom Flüssigkeit aus dieser Batterie verhindert wird.

The drawings show:

Figure 1

A top view of the top of a 3-pin socket serving both for the electrical connection and for a fluid / gas coupling with three socket contacts protruding into its socket, with a closure part with an outer carrier plate for locking the contact elements and fluid in the top of the socket housing - / Gas coupling parts is embedded.

Figure 2

A cross-sectional view corresponding to a section line AA 'through the plug-in attachment of the socket according to FIG. 1, showing the socket and pilot contacts and through holes for mounting two fluid / gas coupling parts and a coding pin;

Figure 3

A cross-sectional view through the side additional plug-in section for receiving a single socket contact or a third fluid / gas coupling part, this being guided parallel to the side to the common plug-in section of the two parallel socket contacts laid out in accordance with the standard;

Figure 4

A cross-sectional view along the longitudinal side of the closure part of a socket according to Figure 1, 2, but which runs along the half-width of the closure part cut line BB 'according to Figure 5;

Figure 5

A plan view of the outer carrier plate of the closure part shown in Figure 4 with a hidden, on the underside of which protrudes locking plate;

Figure 6

A cross-sectional view along the section line EE 'over the narrow side of the closure part of Figures 4 and 5, seen on the outer locking plate, the support plate and a locking web projecting at the end thereof;

Figure 7

A top view of the top of a 3-pin connector, which can be plugged with the socket according to Figure 1, the closure part with the outer support plate for locking the main contacts consisting of two or three pin contacts, two pilot contact pins, a coding pin and in its housing two fluid / gas coupling parts inserted and clipped on;

Figure 8

A cross-sectional view through the protective collar in the direction of guiding the strain relief clamp along the section line CC 'of Figure 7;

Figure 9

A cross-sectional view through the bare protective collar with a plan view of the transition to the rest of the connector housing along the section line CC 'of Figure 7;

Figure 10

A cross-sectional view along the longitudinal side of the closure part of a plug according to FIG. 7, 8 according to a section line DD ′ according to FIG. 11, which is guided laterally along the longitudinal side of the closure part;

Figure 11

A plan view of the outer carrier plate of the closure part of Figure 10 with the locking plate laterally projecting laterally from the underside thereof;

Figure 12

A cross-sectional view along the section line FF 'over the narrow side of the closure part of Figures 10 and 11, seen on the outer locking plate, the support plate and a locking web projecting at the end thereof;

Figure 13

An illustration of two different fluid / gas coupling parts of the socket to be used.

Figure 14

A representation of the corresponding fluid / gas coupling parts of the connector to be used.

Figure 15

The representation of the arrangement of a shut-off valve in each of the opposite fluid / gas coupling parts of the plug and socket, through which the escape of water from a charger to be connected to a battery and from the liquid from this battery is prevented.

The drawings show a plug-in device for electric industrial trucks from a socket (1) and a plug (2).

The connector is used on both sides mm connection of two or three electrical Lines from two or three main contacts and one or two fluid / gas lines and preferably for connecting two additional electrical lines for additional pilot contacts serving as auxiliary contacts.

The socket (1) according to Figures 1 and 2 has a contact receiving part (3) in the upper half with a guide for a strain relief clamp as well as with a from this forward-extending plug-in projection (12).

The plug-in extension (12) consists of two plug-in extension sections (12 ', 12' '), namely from a larger left section (12 ') with two receiving spaces (17a, 17b) for two there socket contacts (6,6 ') to be arranged parallel to one another and from a third laterally outside separately created second section (12 ''). This has one third receiving space running parallel to the side of the receiving spaces (17a, 17b) (17c), in which optionally a third socket contact (6 '') of the main contacts or a fluid / gas coupling part (40) can be introduced (see FIG. 13).

Three openings (20a, b, c) are made at the end of the plug-in attachment (12), which lead to one of the three recording rooms (17a, b, c).

The two or three socket contacts are contacted via these openings 20a, b, c (6,6 ', 6' ') of the socket (1) provided that this with the pin contacts (7,7', 7 '') of the plug (2) can be plugged.

In Figure 1, the socket contacts (6,6 ', 6' ') are only schematic with their front end in the area to the openings (20a, b, c) extending there.

There is also the coding pin (5) of the socket extending in the plugging direction schematically shown, which according to the cross-sectional view of Figure 2 in the middle above of the two receiving spaces (17a, b) of the left plug-in projection section (12 ') is coming.

A longitudinal receptacle (14) in the plug-in attachment (12) is provided for mounting the coding pin (5). created, which forms a hexagonal cross-sectional opening and thus also a hexagonal outer cross section holding section of the coding pin (5) against rotation.

The coding pin (5) with its backward holding section is shown in broken lines in FIG indicated, by a snap mechanism in an opening (42) in the area of the contact part (3) can be determined.

The formation of the first plug-in projection section (12 ') with the contact of the socket contacts (6,6 ') and the receiving rooms (17a, b) therefor as well as the storage and guidance corresponds to these main contacts in the plug-in attachment (12) and in the contact-receiving part (3) the standard for device connectors according to DIN 43589, the same for the installation and reception of the pilot contact sleeves (10, 11) and their longitudinal recordings (37.38) applies.

These pilot contacts are each between the coding pin (5) and the socket contacts (6, 6 ').

The first plug-in extension section (12 ') is also according to other features of the Plug approach of the socket according to EP 0 821 444 A2

In this respect, it has two additional lower longitudinal recordings (26, 27) for the introduction of the Fluid / gas coupling part (8).

This fluid / gas coupling part (8) is designed according to FIG. 13, two being parallel Pipe pieces (31,32), which are inserted into the longitudinal recordings (26,27), in pass over a mere central piece of pipe, which goes towards the strain relief clamp comes to rest.

All electrical contact elements, i.e. the socket contacts (6,6 ', 6' ') and the Pilot contacts (10, 11) as well as the fluid / gas coupling part (8) and one instead of the socket contact (6 '') insertable fluid / gas coupling part (40) are through a closure part (22) with a locking plate (24) projecting vertically downward therefrom fixed.

The closure part (22) is introduced via a rectangular opening, which on one of the outer sides of the contact part (3).

The formation of this closure part (22) is shown in Figures 4, 5 and 6.

The closure part (22) is in contrast to that in the socket according to EP 0 821 444 A2 closure part used longer, this also for those on the The rectangular opening located on the top of the contacting part (3) applies.

In this respect, this closure part can also be used to define the in the receiving space (17c) of the second plug-in extension section (12 '') of the socket contact (6 '') or the fluid / gas coupling part (40) alternatively mounted there.

The spacing of the additional section (12 '') of the plug-in attachment (12) opposite the first section (12 ') of this plug-in approach is such that the first plug-in section (12 ') alternatively with the plug of a device connector for Electric industrial trucks according to DIN 43589 or EP 0 821 444 A2 can be plugged over is.

Furthermore, plugging with a plug (2) according to FIGS. 8-10 must be ensured the contact-receiving part (4) of the plug (2) has a protective collar (13), which, apart from the installation of two pin contacts (7,7 ') according to the standard, is preferred has a third pin contact (7 '') or one instead of this contact element required additional fluid / gas coupling part (40 ').

The connector (2) has a first and a second area of the protective collar (13) with two specially designed plug-in receptacles are provided, as in detail for FIGS. 7, 8, 9 is described.

The receiving spaces (17a, b, c) both in the area of the left plug-in section (12 ') the right plug-in section (12 '') are also each formed separately.

Over the area of the contact part (3) of the socket are the two receiving spaces (17a, b) through a housing section (54) for mounting the holding section the coding pin (5) and for guiding two parallel pipe sections (31, 32) of the fluid / gas coupling part (8) separated from each other. Further through sections of the outer wall of the closure part (22) leading vertically downwards into the recess (45) locking plate (24) to be used (see FIGS. 1, 4, 5, 6).

The receiving space (17c) is from the adjacent receiving space (17b) of the first Plug-in projection section (12 '') by a along the contact receiving part (3) extending wall (43) separated.

The receiving spaces (17a, b, c) only go at the outer end of the contact-making part (3) in the area of the strain relief into each other, where the electrical connection lines in Connection with the socket contacts are introduced.

Due to the separation of the recording room (17c) from the two adjacent recording rooms (17a, b) this is particularly suitable insofar as an alternative Fluid / gas coupling part (40) to carry water or battery liquid which is not in Contact with the other electrical contact elements, especially not with the Socket contacts (6,6 ').

In the cross-sectional view according to Figure 3 is the formation of the wall of the additional Plug approach section (12 '') shown, these hatched by the cross hatched circular wall part is reproduced.

The cross-sectional view is towards the front towards the beginning of the plug-in attachment (12), that is to the end face there with the circular opening (20c) located there for attaching a pin contact (7 '') of the plug (2) or the additional fluid / gas coupling part (40 ') of the plug.

Outside the hatched round wall part you can see the radially protruding outside Collar of the face of the additional outer plug-in section (12 '').

The structure of the closure part (22) for fixing the electrical contact elements and the fluid / gas coupling parts within the contact-receiving part (3) results from FIGS. 4, 5 and 6.

The closure part has a rectangular bearing plate (44) which is in an outlet (45) on the top of the housing of the contact part (3) can be fixed.

The closure part (22) projects into the outlet (45) with the locking plates projecting downward (24). On the lower edge of the locking plate (24) are semicircular or omissions (46, 47, 48) spanning an angle of 90 °, with wall sections are formed with which circumferential engagement grooves in the socket contacts are conventionally accessible and fixable.

Corresponding semicircular receptacles (49.50) are used to hold the pilot contact sleeves (10,11).

The fluid / gas coupling part (8) is held by an outwardly projecting part Approach (51) of the locking plate (24), this in turn on the right and left has semicircular recesses (52, 53) which have a radius of curvature corresponding to the pipe sections (31, 32) of the fluid / gas coupling part which are circular in cross section (8) and in undercuts of these fluid / gas coupling parts intervention.

To hold the closure part (22) in the outlet (45) is used on the one hand 4, 5 and 6 locking web (39) projecting in the longitudinal direction beyond the outer edge, which is created in the area below the bearing plate (44) and thus the wall of the contact part (3) engages in the area of the omission (45), and for others via an additional opening (28) within the extension (51), through which the coding pin (5) is pushed with the closure part inserted and then in an opening (42) of the housing section provided on the rear side of the contact-receiving part (3) is to be snapped.

In the longitudinal wall (43) between the two receiving spaces (17b, c) in the area An opening (55) of the contact part (3) is created according to Figure 1. On their On the right and left, there is a lower semicircular height radial to the strain relief clamp retaining ring protruding over the width of the engagement groove (56, 57, 58).

The sections of the locking plate (24) each grip the holder in these retaining rings the socket contacts with a downward approach.

The design of the pilot contact sleeves (10, 11) and, if necessary, additional ones Pilot contact sleeves, which with an adapter in the additional receptacles (26,27) for the fluid / gas coupling parts can be determined, is in the present Drawings not shown.

This design corresponds to that of the contacts and adapters according to EP 0 821 444 A2.

The connector (2), which in Figure 7 or 8 in a plan view of its outside with the outlet (45 ') for the closure part (23) or in a cross-sectional view through the protective collar (13) along the section line CC' of the figure 7 is shown in the direction of the guide of the strain relief clamp,
has a lower protective collar (13) for the two or three pin contacts (7, 7 ', 7'') to be attached there. In contrast to the plug-in attachment (12) of the socket (1), the protective collar (13) consists of a single, laterally connected wall area. According to FIG. 9, however, there is a larger protective collar section with a region (59) which is self-contained and forms a plug-in socket receptacle in accordance with DIN 43589, two plug contacts (7, 7 ') projecting into this plug-in socket receptacle, and for receiving the third pin contact (7'' ) a second self-contained area (60) of a second protective collar section is provided. This area (60) adjoins the side immediately next to the first area (59). The wall pieces of these areas which laterally adjoin on the inside merge into one another, forming a common partition wall (21) for both areas (59, 60).

The thickness of the partition (21) corresponds to the distance between the two plug-in attachment sections (12, 12 '') of the socket (1). Furthermore, since the second area (60) of the protective collar (13) inside a plug-in receptacle with a cylindrical contour and Has the size corresponding to the second plug-in extension section (12 '') of the socket, are this plug-in attachment section (12 '') and the plug-in attachment receptacle of the area (60) and also the first plug-in attachment section (12 ') according to the standard and the plug-in attachment receptacle of the first area (59) of the protective collar designed according to the standard.

Instead of the third pin contact (7 ''), a third can be dispensed with Main contact of the plug device, the installation of a third fluid / gas coupling part (40 ') in the plug (2).

Otherwise corresponds to the creation and formation of the area (59) of the protective collar (13) and the pin contacts (7, 7 ', 7' ') to be received there or in the area (60), the pilot contact pins (10 ', 11'), the coding pin (5 ') and the fluid / gas coupling part (9) and possible additional pilot contacts, which instead of the fluid / gas coupling part (9) be installed, as well as storage and essentially also the locking of these parts of the DX 43589 or the formation of a device connector acc. EP 0 821 444 A2.

The closure part (23) shown in FIGS. 10, 11 and 12 corresponds to the closure part (22) of the socket (1).

The plug (2) has the rectangular outlet (45 ') on its top accordingly the outlet (45) of the socket. In this omission (45 ') is the closure part (23) with the locking plate (25) projecting vertically downwards, for this purpose again a coding pin (5 ') to be inserted there into a recess (28') and a laterally protruding locking web projecting below the bearing plate (44 ') of the closure part (39 ') serves.

Like the locking plate (24) of the socket (1), the locking plate (25) has a semicircular shape or recesses extending in an angular range of 90 °, which with their wall areas or protruding webs in circumferential engagement grooves the fastening sleeves of the pin contacts (7, 7 ', 7' '). These omissions are with the corresponding reference numbers (46 ', 47', 48 ', 49', 50 ', 52', 53 ') as for the locking plate (24) marked. Furthermore, one corresponding to the approach (51) Approach (51 ') given. The distance between the omissions (47, 48) and (47 ', 48') corresponds the distance of the socket contact (6 '') from the socket contact (6 ') or the distance the pin contact (7 '') from the pin contact (7 '). The closure part (23) is so far as well as the closure part (22) compared to that in the device connector acc. the closure part used in EP 0 821 444 A2 is extended laterally so that a The third main contacts or the third fluid / gas coupling part are held can.

The contact part (4) of the plug (2) is correspondingly widened on one side, the part receiving the third pin contact opposite that of the other two Part receiving part as in the socket (1) through a longitudinal wall (43 ') is delimited. Furthermore, they correspond to the support ring-shaped supports (56, 57 and 58) corresponding supports (56 ', 57', 58 ') are formed. In the long wall (43 ') a corresponding opening (55') is let in, so that the locking plate (25) can be locked against the supports (56 ', 57' and 58 ').

The fluid / gas coupling part (8) of the socket (1) shown in Figure 13 consists of two parallel pipe sections (31, 32), which are used in this at a short distance run towards each other in the direction of the plug-in attachment (12) and from the open side of the Contact part (3) are inserted. The pipe sections (31, 32) go under Forming a Y-shaped bend into each other and run over a piece of pipe (33) towards the strain relief clamp. Via engagement openings (35, 36) on the The top of the pipe sections (33, 33 ') is the fluid / gas coupling part (8) in the socket can be fixed by means of the locking plate (24) of the closure part (22).

The tube pieces (31, 32) are sleeve-shaped at their upper end, wherein insofar as pin-shaped. Fig. 14 formed pipe sections (31 ', 32') of a fluid / gas coupling part (9) of the plug (3) can be inserted into these sleeve-shaped ends and can be sealed by means of pipe seals to form a fluid / gas coupling.

The fluid / gas coupling part (9) also has engagement recesses (35 ', 36'), by means of which it can be fixed via the locking plate (25) which comes into effect in the plug are.

The fluid / gas coupling parts (8, 9) and the additional alternative fluid / gas coupling parts (40, 40 ') are rigid and made of an electrolyte liquid resistant Plastic material (polycarbonate) made so that easily in the tubular or as Longitudinal bore trained longitudinal receptacles (26, 27) or (26 ', 27') insertable and elongated plastic parts that can be plugged over one another are provided.

This easy handling is due to the system and the Y-shaped angle of the in the additional lower housing receptacles (26, 27) or (26 ', 27') insertable two Pipe pieces (30, 31) or (30 ', 31') and by the one bent outwards for this purpose Favored outer pipe section (33) or (33 ') with hose nozzle. The housing the socket as well as the plug is also preferably made of polycarbonate.

In contrast to the Y-shaped angled fluid / gas coupling parts (8,9) additional fluid / gas coupling parts (40, 40 ') are rectilinear and have one constant large inner diameter. The dimension of this additional Fluid / gas coupling parts are larger than that of the fluid / gas coupling parts (8,9), since these are located directly in the reception rooms for the main contacts come, which are significantly larger than the additional lower longitudinal shots (26,27) or (26 ', 27'). This results in an increased flow rate and a lower flow resistance in the larger inner diameter having fluid / gas coupling parts (40.40 '). These are especially for transportation suitable for fluids with higher viscosity.

According to FIG. 16, these fluid / gas coupling parts (40, 40 ') have to be plugged in at the front Section (66,66 ') each have a check valve (67,68). The check valve spool (69,70) each have an outwardly projecting plunger (71,72). These parts are dimensioned and designed so that when pushing the coupling parts, the plunger (71,72) collide and from their closed position under spring pressure move laterally inwards so that the valves move into the open position and the transition of water from a reservoir of the charger to the battery without Battery fluid is lost. Such valves can also be used in the coupling parts (8,9) can be installed if the necessary space is available.

The coupling parts (40, 40 ') each have a hose nozzle at one end and at the opposite end a socket-shaped projection (61) or a pin-shaped Approach (62), these approaches to form the fluid / gas coupling can be plugged are. In the outer wall of the tubular fluid / gas coupling parts (40, 40 ') outwardly opening engagement recesses (63, 63 '). In this respect is one Definition of the plugged in the receiving spaces (17c, 17c ') of the connector housing Fluid / gas coupling parts (40, 40 ') possible using the locking plates (24, 25).

To guide the locking plates (24, 25) is parallel to the transverse walls (29, 30) a guide slot (64, 65) is guided through the contact-receiving parts (3, 4). Here In addition, through openings (55, 55 ') are created in the longitudinal wall (43, 43') there. (Figure 1, 7)

The guide slot (64, 65) extends from the openings (45, 45 ') on the top of the housing and extends downward transversely to the through openings (55, 55') and the longitudinal receptacles (26, 27; 26 ', 27';37,38; 37 ', 38') for the pilot contacts (10,11; 10 ', 11') and the fluid / gas coupling parts (8,9) continuing section, which extends in the housing in the form of a projection ( 54.54 '). To the side, it runs out in front of the supports (56, 57, 58; 56 ', 57', 58 ') forming a projecting wall piece.

Claims (20)

Combined charging and fluid / gas plug-in device for electric industrial trucks, in particular for connecting an accumulator with electrolyte circulation to a power and fluid supply unit, consisting of a socket and a plug with electrical contact elements for establishing at least one electrical connection and made of fluid / Gas coupling parts for producing at least one fluid / gas coupling,
wherein the socket as a housing has a contact-receiving part with a plug-in attachment, which surrounds a plurality of socket contacts arranged parallel to one another, with a receptacle for a coding pin being arranged between two of the socket contacts and above this receptacle on the right and left-hand side on the outside of the plug-in attachment, two guide grooves parallel to one another and extend in the direction of plug and socket,
and wherein the plug as the housing has a contact-receiving part with a protective collar and a plurality of pin contacts arranged parallel to one another, which are surrounded by a protective collar, the inside of which is provided with two parallel guide webs which are dimensioned such that the outer contours of the guide webs are plugged in State of the socket and plug, in which the protective collar of the plug encloses the plug-in attachment of the socket, engage in the guide grooves, a receptacle for a coding pin to be plugged in with the coding pin of the socket being placed between two of the pin contacts,
characterized in that
the plug-in extension (12) has at least two socket contacts (6, 6 ') arranged parallel to one another and two receiving spaces (17a, b) therefor in a first plug-in extension section (12') and at least one third receiving space (17c) running parallel to these reception spaces in one laterally separated outer plug-in projection section (12 '') for a third, interchangeable socket contact (6 '') parallel to the first two socket contacts (6,6 ')
as well as three openings (20a, b, c) on the plug-in end face (19), each of which leads to one of the three receiving spaces (17a, b, c) and for the introduction of a pin contact (7, 7 ', 7'') the connector (2),
and that the two plug-in projection sections (12 ', 12'') form a common socket housing part with the contact-receiving part (3),
that the plug (2) has at least two or three spaced, interchangeable parallel pin contacts (7, 7 ', 7'') projecting into the protective collar (13) and that the protective collar (13) has two sections (59, 60) has, namely a first protective collar section (59) and a second, laterally outer section (60), separate therefrom, for receiving the laterally outer, separate extension section (12 ''),
wherein the first protective collar section (59) serves to receive the plug-in extension section (12 ') with the receiving spaces (17a, b) for the two first socket contacts (6, 6') arranged parallel to one another in the inserted state,
and that the two protective collar sections (59, 60) form a common connector housing part for the contact-receiving part (4). Combined charging and fluid / gas plug device according to claim 1,
characterized in that
the section (12 ') of the plug-in attachment (12) for receiving two parallel socket contacts (6, 6') to the laterally outer section (12 '') of the third socket contact (6 '') is spaced so far apart that an additional plug-in with the protective collar of a plug-in device for electric industrial trucks for only two parallel pin contacts. Combined charging and fluid / gas plug device according to claim 1 or 2,
characterized in that
the protective collar (13) for receiving three parallel, spaced-apart pin contacts (7, 7 ', 7'') has a section with a common first area (59) for two pin contacts (7, 7') and a second area (60 ) for receiving the additional third parallel pin contact (7 ''), the wall of these sections merging laterally into one another in the area and a common partition (21) for both areas (59, 60) being formed. Combined charging and fluid / gas plug device according to claim 2 or 3,
characterized in that
the section (12 ') of the plug-in attachment (12) and / or the first region (59) of the protective collar (13) have dimensions in accordance with DIN 43589-1 for electric industrial trucks. Combined charging and fluid / gas plug device according to one of claims 1-4,
characterized in that
the socket (1) and the plug (2) additionally each have at least two parallel contact elements (10, 11; 10 ', 11') for forming electrical pilot contacts and two spaced parallel receptacles (37, 38; 37 ', 38') ) between the receiving spaces (17a, b; 17'a, b) of the main contacts for storing these pilot contacts. Combined charging and fluid / gas plug device according to one of claims 1-5,
characterized in that
the fluid / gas coupling parts (8.9; 40.40 ') to form the fluid / gas coupling integrated in the socket (1) and the plug (2) in the housing of these connectors (1, 2) or are arranged in the guide webs (16, 16 ') of the protective collar (13) or the guide grooves (15, 15') of the plug-in extension (12) and extend into the outer region of the plug-in extension (12) or the protective collar (13). Combined charging and fluid / gas plug device according to one of claims 1-6,
characterized in that
in the contact-receiving part (3, 4) of the socket and the plug in the longitudinal direction above or below the receptacles of the coding pin (5,5 ') and the pilot contacts (10, 11; 10', 11 ') at least one additional longitudinal receptacle (26, 27; 26 ', 27') is created, which extends from the inside of the contact-receiving part (3, 4) to the outer end face of the plug-in attachment of the socket or to the transition in the contact-receiving part (4) of the plug to the protective collar (13), and that In these longitudinal recordings (26, 27; 26 ', 27') a tubular fluid / gas coupling part (8, 9) with at least one inner conduit (41, 41 ', 41'') can be detachably inserted and with an external fluid - / Gas connection (34.34 ') opens into the socket of the socket or inside the protective collar of the plug, and that the fluid / gas connections (34,34') are aligned with each other when plugging the connector so that these can be plugged together. Combined charging and fluid / gas plug device according to claim 7,
characterized in that
two additional lower receptacles (26, 27; 26 ', 27') are placed and inside the contact-receiving part (3, 4) in a bearing shoulder (64) of the housing wall between and / or below the receiving spaces of the main contacts (1, 2) and receptacles of the pilot contacts (10, 11; 10 ', 11') are continued, which extends from the inner housing transverse wall (29, 30) of the plug connector through the interior of the contact-receiving part (3, 4). Combined charging and fluid / gas plug device according to one of claims 1-8,
characterized in that
A fluid / gas coupling part (8, 9) is applied via the contact part (3, 4) to the lower additional longitudinal receptacles (26, 27; 26 ', 27'). Combined charging and fluid / gas plug device according to one of claims 1-9,
characterized in that
the elongated fluid / gas coupling parts (8, 9), which have an inner conduit (41, 41 ', 41''), consist of two elongated, parallel, spaced-apart, in the lower longitudinal receptacles (26, 27; 26', 27 ') insertable pipe sections (31, 32; 31', 32 ') and of a pipe section (33, 33') which is angled in a Y-shape and runs out to the end of the contact-making part (3, 4), this in an outer hose nozzle (24,26) for connection to a compressed air or fluid supply unit or the battery to be serviced leaks. Combined charging and fluid / gas plug device according to one of claims 1-10,
characterized in that
the fluid / gas connection (34) of the fluid / gas coupling part (8) which can be inserted into the lower longitudinal receptacle (26, 27) of the socket has two socket-shaped approaches and the fluid / gas connection (34 ') of the in the receptacle (26 ', 27') of the plug-in fluid / gas coupling part (9) has two pin-shaped lugs, these being pluggable with the socket-shaped lugs. Combined charging and fluid / gas plug device according to one of claims 1-11,
characterized in that
the fluid / gas coupling parts (8, 9) have outwardly opening engagement recesses (35, 36) in the walls of their sections which can be inserted into the longitudinal receptacles (26, 27; 26 ', 27'). Combined charging and fluid / gas plug device according to one of claims 7-11,
characterized in that
the engaging recesses (35, 36) of the inserted fluid / gas coupling parts (8, 9) come to rest under an opening made in their bearing projection (64) to form a guide slot (65), the opening being at the top of the contacting part (3 , 4) until a fastening part (22, 23) that can be fastened there opens, and that a locking plate (24, 25) can be inserted into the outlet, which for holding the fluid / gas coupling parts (8, 9) in their engagement recesses (35.36) intervenes. Combined charging and fluid / gas plug device according to one of claims 1-13,
characterized in that
to the fluid / gas coupling parts (8, 9) or instead of this an additional fluid / gas coupling part (40, 40 ') is provided, which in one of the receiving spaces (17c, 17c') instead of the additional main contact (6 '', 7 '') is introduced. Combined charging and fluid / gas plug device according to one of Claims 1-14,
characterized in that
the additional fluid / gas coupling part (40, 40 ') is tubular with an inner conduit and has a hose nozzle at one end and a socket-shaped extension (61) or a pin-shaped extension (62) at the other end, with two fluids - / Gas coupling parts (40, 40 ') can be plugged over two such different approaches. Combined charging and fluid / gas plug device according to claim 15,
characterized in that
in the outer wall of the fluid / gas coupling parts (40, 40 ') engagement recesses (63, 63') are created, in which the locking plate (24, 25) of the closure part (22, 23) engages to fix them. Combined charging and fluid / gas plug device according to one of claims 12 - 16,
characterized in that
to guide the locking plate (24, 25) of the closure part (22, 23) across the contact receiving part (3, 4) at a distance from the transverse wall (29, 30) there is a guide slot (64, 65) as a longitudinal outlet from the top of the contact receiving part ( 3,4) up to a wall piece (56, 57, 58; 56 ', 57', 58 ') projecting from the inside of the lower housing wall. Combined charging and fluid / gas plug device according to claim 17,
characterized in that
to form the guide slot (64,65) for the locking plate (24,25) in the longitudinal wall (43,43 '), which is created between the receiving spaces (17b, c) or (17b', c '), a passage opening (55,55 ') is provided and in the shoulder-shaped housing section (54,54') serving to guide the longitudinal receptacles (26,27; 26 ', 27') for the tubular fluid / gas coupling parts (8,9) extends transversely to these longitudinal recordings extending longitudinal recess. Combined charging and fluid / gas plug device according to one of claims 1-18,
characterized in that
the fluid / gas coupling parts (8.9; 40.40 ') for guiding water, battery fluid or other aqueous or highly viscous fluids in the front section to be plugged are provided with a check valve (67,68), whereby the check valve a plunger (71, 72) projects outwards, which are held in the closed position against spring pressure. Connector in the form of a socket (1) or a plug (2) according to one of the Claims 1-19.

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